Railway communication power supply remote double-way AC switching test device

Abstract

The utility model discloses a railway communication power supply remote double -circuit AC switching test device belongs to power supply double -circuit AC switching technical field, including the bottom plate, the bottom plate upper end fixedly connected with main road power supply, the bottom plate upper end fixedly connected with spare power supply, the bottom plate upper end fixedly connected with power supply three, the bottom plate upper end fixedly connected with switch structure, the bottom plate upper end fixedly connected with two contactor structure, it ensures the initial condition of every test, operation step to be completely consistent through the control variable mode, effectively eliminates the error of manual operation, has promoted the accuracy of test result, can intuitively feedback the full opening of main spare circuit, full close, one open one close and different mode through the lighting state of pilot lamp no.

Description

Technical Field

[0001] This utility model relates to the field of power supply dual-channel AC switching technology, and more specifically, to a test device for remote dual-channel AC switching of railway communication power supply. Background Technology

[0002] During the operation of railway communication systems, the stability of power supply directly determines the continuity and reliability of communication signals. Once the power system fails or the switching is abnormal, it may lead to serious problems such as the interruption of railway dispatching instruction transmission and the failure of train operation monitoring, thereby threatening railway transportation safety. Therefore, it is necessary to test and detect the dual-channel AC switching function of railway communication power supply, which is a key link to ensure the stable operation of railway communication systems.

[0003] Traditional railway communication power supply dual-path AC switching tests mostly adopt on-site manual operation mode. Since the power supply sites such as communication base stations and signal relay stations along the railway are often located in remote areas, and there are many sites with scattered geographical locations, test personnel need to travel back and forth between various sites, carrying test equipment to perform on-site wiring, parameter debugging and result recording. This method not only consumes a lot of manpower and transportation costs, but is also limited by external environmental factors such as weather and road conditions. The test cycle is long and inefficient, making it difficult to meet the timeliness requirements of railway communication systems for power switching performance testing.

[0004] Meanwhile, traditional testing methods rely on manual operation to control circuit on / off states and monitor status. Human error is difficult to avoid. During the test, the test personnel need to manually adjust the switch status and record instrument data. It is impossible to strictly guarantee the consistency of test conditions for each test, resulting in poor repeatability and accuracy of test results. It is difficult to accurately reflect the true performance of the dual-path power switching system under different operating conditions. Moreover, manual on-site testing cannot achieve real-time remote monitoring of the test process. If a short circuit or equipment malfunction occurs during the test, the test personnel will find it difficult to detect and take emergency measures in time, which may damage the test equipment or even affect the normal railway communication power supply.

[0005] Therefore, a remote dual-channel AC switching test device for railway communication power supply is proposed to address the above problems. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] To address the problems existing in the prior art, the purpose of this utility model is to provide a remote dual-channel AC switching test device for railway communication power supply, which can realize the function of remotely controlling the railway communication power supply to conduct dual-channel AC switching tests in a controlled variable manner.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A remote dual-channel AC switching test device for railway communication power supply includes a base plate. A main power supply, a backup power supply, and a third power supply are fixedly connected to the upper end of the base plate. An indicator light (first and second lights) are also fixedly connected to the upper end of the base plate. An mounting strip is fixedly connected to the upper end of the base plate. A switch structure is fixedly connected to the upper end of the base plate, and two contactor structures and an indicator light (third light) are also fixedly connected to the upper end of the base plate. The switch structure includes a U-shaped frame fixedly mounted on the upper end of the base plate. Two opening and closing components are fixedly connected to the lower end of the U-shaped frame. Air switches are rotatably connected to the exterior of each of the two opening and closing components, and both air switches are fixedly mounted to the outer surface of the mounting strip by bolts.

[0011] Furthermore, the opening and closing assembly includes a connecting plate, which is fixedly installed on the top wall of the inner cavity of the U-shaped frame. An electric push rod is fixedly connected to the lower end of the connecting plate. The output end of the electric push rod is fixedly connected to a connecting frame through a coupling. A slider is slidably connected to the inner cavity of the connecting frame. A connecting rod is rotatably connected to the inner surface of the connecting frame. Opening and closing handles are fixedly connected to both sides of the opening and closing assembly. The opening and closing handles are rotatably installed inside the air switch.

[0012] Furthermore, the contactor structure includes a contactor body, a plurality of wiring slots are provided on one side of the contactor body, a plurality of internal thread blocks are fixedly connected to the upper end of the contactor body, a screw is threadedly connected to the inner surface of the plurality of internal thread blocks, a pressure block is rotatably connected to the lower end of the plurality of screws, and a mounting slot is provided on the left end of the contactor body, a connecting component is fixedly connected to the inner cavity of the mounting slot.

[0013] Furthermore, the connecting assembly includes an electromagnet and a magnetic plate. Two springs are fixedly connected to the right end of the magnetic plate, and a connecting plate two is fixedly connected to the right end of each of the two springs. A connecting rod two is fixedly connected to the right end of the magnetic plate, and multiple conductive square rings are fixedly connected to the outer surface of the connecting rod two. Contact points one are fixedly connected to both sides of the multiple conductive square rings.

[0014] Furthermore, the connection assembly also includes multiple conductive blocks, each of which has a contact point two fixedly connected to one side.

[0015] Furthermore, the electromagnet is fixedly installed on the left end of the contactor body, the conductive block is fixedly installed on the bottom wall of the wiring groove, both connecting plates are fixedly installed on the inner wall of the mounting groove, and the contactor body is fixedly installed on the upper end of the base plate.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] (1) This solution achieves centralized management of test operations through remote control technology. Operators do not need to travel to remote power supply stations. They can complete test tasks for multiple stations and multiple devices through the remote monitoring center. This not only saves a lot of manpower and transportation costs, but also breaks through the limitations of time and space. The test efficiency is greatly improved compared with the traditional method.

[0019] (2) This scheme uses control variables to control the on / off state of the main and backup circuits. By controlling variables, it ensures that the initial conditions and operation steps of each test are completely consistent, effectively eliminating the error caused by manual operation and improving the accuracy of the test results. The lighting status of indicator lights 1, 2 and 3 can intuitively reflect the different modes of the main and backup circuits, such as fully open, fully closed, and one open and one closed. It can also intuitively show the specific power supply lines in different modes, providing clear and accurate data for the analysis of the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the switch structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the opening and closing component of this utility model;

[0023] Figure 4 This is a schematic diagram of the contactor structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection component of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Base plate; 2. Main power supply; 3. Backup power supply; 4. Power supply three; 5. Indicator light one; 6. Indicator light two; 7. Mounting strip; 8. Switch structure; 81. U-shaped frame; 82. Air switch; 83. Opening and closing assembly; 831. Connecting plate one; 832. Electric push rod; 833. Connecting frame; 834. Slider; 835. Connecting rod one; 836. Opening and closing handle; 9. Contactor structure; 91. Contactor body; 92. Wiring groove; 93. Internal thread block; 94. Screw; 95. Pressure block; 96. Mounting groove; 97. Connecting assembly; 971. Electromagnet; 972. Magnetic plate; 973. Spring; 974. Connecting plate two; 975. Connecting rod two; 976. Conductive square ring; 977. Contact one; 978. Conductive block; 979. Contact two; 10. Indicator light three. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example 1:

[0031] Please see Figure 1 - Figure 3 A remote dual-channel AC switching test device for railway communication power supply includes a base plate 1. A main power supply 2 is fixedly connected to the upper end of the base plate 1. A backup power supply 3 is fixedly connected to the upper end of the base plate 1. A third power supply 4 is fixedly connected to the upper end of the base plate 1. An indicator light 5 is fixedly connected to the upper end of the base plate 1. An indicator light 6 is fixedly connected to the upper end of the base plate 1. An installation strip 7 is fixedly connected to the upper end of the base plate 1. A switch structure 8 is fixedly connected to the upper end of the base plate 1. Two contactor structures 9 are fixedly connected to the upper end of the base plate 1. An indicator light 10 is fixedly connected to the upper end of the base plate 1. The switch structure 8 includes a U-shaped frame 81, which is fixedly installed on the upper end of the base plate 1. Two opening and closing components 83 are fixedly connected to the lower end of the U-shaped frame 81. An air switch 82 is rotatably connected to the outside of each of the two opening and closing components 83. The two air switches 82 are fixedly installed on the outer surface of the installation strip 7 by bolts.

[0032] Indicator lights 5, 6, and 10 are all 220V AC indicator lights, using high-brightness LED light sources. They feature low power consumption, long lifespan, and fast response speed, and can intuitively reflect the on / off status of different circuits through their illumination status. Indicator light 5 is connected in series in the common power supply circuit of the main power supply 2 and the backup power supply 3 to indicate the overall on / off status of the dual power supply system. Indicator light 6 is independently connected to the contactor structure 9 of the backup circuit and is specifically used to reflect the conduction status of the backup circuit. Indicator light 10 is independently connected to the air switch 82 of the backup circuit in the switch structure 8 and is used to individually indicate the closed status of the air switch 82 of the backup circuit.

[0033] The opening and closing assembly 83 includes a connecting plate 831, which is fixedly installed on the top wall of the inner cavity of the U-shaped frame 81. An electric push rod 832 is fixedly connected to the lower end of the connecting plate 831. The output end of the electric push rod 832 is fixedly connected to a connecting frame 833 through a coupling. A slider 834 is slidably connected to the inner cavity of the connecting frame 833. A connecting rod 835 is rotatably connected to the inner surface of the connecting frame 833. Opening and closing handles 836 are fixedly connected to both sides of the opening and closing assembly 83. The opening and closing handles 836 are rotatably installed inside the air switch 82.

[0034] The air switch 82 uses a CDM1-63 molded case circuit breaker; the electric actuator 832 uses an HB-DJ806 DC servo electric actuator, which has IP66 protection level and limit signal feedback function, is powered by power supply three, and is remotely controlled by a PLC controller.

[0035] This solution controls the electric push rod 832 to extend. When the push rod extends, it drives the connecting frame 833 to move forward. At this time, the opening and closing handle 836 rotates around the inside of the air switch 82, causing the connecting rod 835 to rotate, which in turn causes the slider 834 to slide along the connecting frame 833. During the closing process, the slider 834 slides up and then down inside the connecting frame 833, thus controlling the air switch 82 from open to closed.

[0036] Please see Figure 4 - Figure 5 The contactor structure 9 includes a contactor body 91, which is fixedly installed on the upper end of the base plate 1. A plurality of wiring slots 92 are provided on one side of the contactor body 91. A plurality of internal threaded blocks 93 are fixedly connected to the upper end of the contactor body 91. A screw 94 is threadedly connected to the inner surface of each of the plurality of internal threaded blocks 93. A pressure block 95 is rotatably connected to the lower end of each of the plurality of screws 94. A mounting slot 96 is provided on the left end of the contactor body 91. A connecting component 97 is fixedly connected to the inner cavity of the mounting slot 96.

[0037] The connecting assembly 97 includes an electromagnet 971 and a magnetic plate 972. The electromagnet 971 is fixedly installed on the left end of the contactor body 91. Two springs 973 are fixedly connected to the right end of the magnetic plate 972. A connecting plate 974 is fixedly connected to the right end of each of the two springs 973. A connecting rod 975 is fixedly connected to the right end of the magnetic plate 972. Both connecting plates 974 are fixedly installed on the inner wall of the mounting groove 96. Multiple conductive square rings 976 are fixedly connected to the outer surface of the connecting rod 975. Contacts 977 are fixedly connected to both sides of the multiple conductive square rings 976.

[0038] Electromagnet 971 is a square JF-0837 type DC electromagnet, which fits the mounting slot 96 space. It is powered by power supply 34 and controlled by PLC controller to turn on and off. It generates magnetism when powered on and loses magnetism when powered off. The magnetic plate 972 is made of soft iron and has good magnetic permeability.

[0039] The connection assembly 97 also includes multiple conductive blocks 978, which are fixedly installed on the bottom wall of the inner cavity of the wiring groove 92. Each of the multiple conductive blocks 978 has a contact 979 fixedly connected to one side.

[0040] This solution uses a rotating screw 94 to move the pressure block 95 up and down, thereby pressing and fixing the wire connected to the wiring slot 92 to prevent the wire from becoming loose and causing poor contact, so that the wire can contact the conductive block 978 in the connecting component 97.

[0041] By controlling the electromagnet 971 to be energized, the electromagnet 971 generates magnetism to attract the magnetic plate 972. The magnetic plate 972 pulls multiple conductive square rings 976 to move through the connecting rod 975, thereby causing the first contact 977 and the second contact 979 to make close contact. During this process, the movement of the magnetic plate 972 while the connecting plate 974 remains stationary will cause the spring 973 to be stretched. When the electromagnet 971 is de-energized, the magnetic plate 972 will be pulled back to its original position under the action of the spring 973, thereby breaking the contact between the first contact 977 and the second contact 979.

[0042] It should be noted that the main power supply 2, backup power supply 3, power supply 4, indicator light 5, switch structure 8, and two contactor structures 9 in this utility model together constitute a dual power supply switching circuit. Indicator light 6 is independently connected to the contactor structure 9 of the backup circuit, and indicator light 10 is independently connected to the air switch 82 of the backup circuit of switch structure 8.

[0043] It should be noted that in this utility model, the PLC controller, electromagnet 971, and electric push rod 832 are powered by power supply 4; the electromagnet 971 and electric push rod 832 are controlled by the PLC controller.

[0044] The PLC controller selected is the Siemens S7-200SMART series SR20 compact PLC, which supports RS485 communication and Modbus protocol. It establishes a connection with the host computer in the remote monitoring center through the ME909s-821 4G communication module. Operators can send control commands through the host computer software in the remote monitoring center. The commands are transmitted to the PLC controller through the communication module. The PLC controller controls the action of actuators such as electric push rod 832 and electromagnet 971 according to the commands to realize the switching of circuit and the adjustment of test mode.

[0045] It should be noted that the specific installation methods, circuit connection methods, and control methods of the electromagnet 971, electric push rod 832, multiple indicator lights, air switch 82, contactor body 91, and power supply 4 in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0046] Working principle:

[0047] Before the test begins, the operator sets the test parameters and clarifies the test mode (such as main circuit on and backup circuit on, main circuit off but backup circuit on, main circuit on but backup circuit off, etc.) through the host computer software in the remote monitoring center. The operator then sends the instructions to the device's PLC controller through the communication module. At this time, the main power supply 2 and backup power supply 3 are both in standby mode, the air switch 82 is in the open position, the electromagnet 971 is in the de-energized state, and indicator lights 1-5, 2-6 and 3-10 are not lit.

[0048] During the test, if it is necessary to switch the test mode, the operator only needs to modify the instruction in the remote monitoring center, and the PLC controller will immediately execute the corresponding operation: For example, when switching from "all on" to "main off, backup on", the controller first cuts off the power supply to the main circuit electromagnet 971, so that the magnetic plate 972 is pulled back to its original position under the action of the spring 973, so that contact 1 977 and contact 2 979 are separated. Then, the controller controls the main circuit electric push rod 832 to retract, driving the air switch 82 to open; at the same time, the backup circuit electric push rod 832 and electromagnet 971 are kept running, so that indicator light 3 10 and indicator light 2 6 continue to light up, thus completing the mode switching.

[0049] When performing a remote control test, if the preset mode is "main circuit on but backup circuit off", the PLC controller first sends a start command to the electric push rod 832 of the main circuit. Power supply 4 supplies power to the electric push rod 832, and the push rod extends. At this time, the air switch 82 of the main circuit changes from open to closed. The slider 834 will slide up and then down along the connecting frame 833, and the air switch 82 of the main circuit will close. At the same time, the PLC controller controls the electromagnet 971 of the main circuit to be energized. The electromagnet 971 generates magnetism to attract the magnetic plate 972. The magnetic plate 972 is connected to the connecting rod 975. Pulling multiple conductive square rings 976 moves the circuit, causing contact 1 977 to make tight contact with contact 2 979, forming a complete circuit in the main circuit, and indicator light 1 5 lights up. At the same time, the PLC controller sends a holding command to the electric push rod 832 of the backup circuit, and the air switch 82 of the backup circuit remains open, the backup circuit is disconnected, and indicator lights 2 6 and 3 10 do not light up. The operator can observe that indicator light 1 5 is on and indicator lights 2 6 and 3 10 are off through the image acquisition module of the monitoring center or the on-site feedback signal, thus confirming the circuit status of main circuit on and backup circuit off.

[0050] If the preset mode is "main circuit disconnected but backup circuit connected", the control logic is the opposite of the above process: the PLC controller activates the electric push rod 832 of the backup circuit, causing the backup circuit air switch 82 to close, and simultaneously controls the backup circuit electromagnet 971 to be energized. Contact 1 977 and contact 2 979 achieve circuit conduction, and indicator lights 2 6 and 3 10 light up; the electric push rod 832 and electromagnet 971 of the main circuit are both in the closed state, the air switch 82 is opened, and the circuit is disconnected. At this time, by observing the state of indicator light 5, it can be verified whether the backup circuit can provide power in time when the main circuit fails. If indicator light 5 is lit, it means that the backup circuit can provide power in time when the main circuit fails; otherwise, it means that the backup circuit cannot provide power in time when the main circuit fails.

[0051] When performing the "main circuit on and backup circuit on" mode test, the PLC controller simultaneously sends start commands to the electric push rods 832 of the main and backup circuits. Both air switches 82 are closed, and both circuits are connected. If indicator lights 1-5 and 3-10 are lit at this time, and indicator light 2-6 is off, it means that when both main and backup air switches 82 are closed, the main circuit power supply 2 will be used first. This is achieved by controlling the main circuit contactor structure 9 to be energized while the backup circuit contactor structure 9 is de-energized. This ensures that when both circuits are energized, only the main circuit is powered, and the backup circuit is not powered.

[0052] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A railway communication power supply remote dual-channel AC switching test device, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to the main power supply (2), the upper end of the base plate (1) is fixedly connected to the backup power supply (3), the upper end of the base plate (1) is fixedly connected to the power supply (3) (4), the upper end of the base plate (1) is fixedly connected to the indicator light (5), the upper end of the base plate (1) is fixedly connected to the indicator light (6), the upper end of the base plate (1) is fixedly connected to the mounting strip (7), the upper end of the base plate (1) is fixedly connected to the switch structure (8), and the upper end of the base plate (1) is fixedly connected to... There are two contactor structures (9). An indicator light three (10) is fixedly connected to the upper end of the base plate (1). The switch structure (8) includes a U-shaped frame (81). The U-shaped frame (81) is fixedly installed on the upper end of the base plate (1). Two opening and closing components (83) are fixedly connected to the lower end of the U-shaped frame (81). An air switch (82) is rotatably connected to the outside of the two opening and closing components (83). The two air switches (82) are fixedly installed on the outer surface of the mounting strip (7) by bolts.

2. The railway communication power supply remote dual-channel AC switching test device according to claim 1, characterized in that: The opening and closing assembly (83) includes a connecting plate (831), which is fixedly installed on the top wall of the inner cavity of the U-shaped frame (81). An electric push rod (832) is fixedly connected to the lower end of the connecting plate (831). The output end of the electric push rod (832) is fixedly connected to a connecting frame (833) through a coupling. A slider (834) is slidably connected to the inner cavity of the connecting frame (833). A connecting rod (835) is rotatably connected to the inner surface of the connecting frame (833). Opening and closing handles (836) are fixedly connected to both sides of the opening and closing assembly (833). The opening and closing handles (836) are rotatably installed inside the air switch (82).

3. The railway communication power supply remote dual-channel AC switching test device according to claim 1, characterized in that: The contactor structure (9) includes a contactor body (91), a plurality of wiring slots (92) are provided on one side of the contactor body (91), a plurality of internal thread blocks (93) are fixedly connected to the upper end of the contactor body (91), a screw (94) is threadedly connected to the inner surface of the plurality of internal thread blocks (93), a pressure block (95) is rotatably connected to the lower end of the plurality of screws (94), and a mounting slot (96) is provided on the left end of the contactor body (91), and a connecting component (97) is fixedly connected to the inner cavity of the mounting slot (96).

4. The railway communication power supply remote dual-channel AC switching test device according to claim 3, characterized in that: The connecting assembly (97) includes an electromagnet (971) and a magnetic plate (972). Two springs (973) are fixedly connected to the right end of the magnetic plate (972). A connecting plate (974) is fixedly connected to the right end of each of the two springs (973). A connecting rod (975) is fixedly connected to the right end of the magnetic plate (972). Multiple conductive square rings (976) are fixedly connected to the outer surface of the connecting rod (975). Contact points (977) are fixedly connected to both sides of the multiple conductive square rings (976).

5. The railway communication power supply remote dual-channel AC switching test device according to claim 4, characterized in that: The connection component (97) further includes a plurality of conductive blocks (978), and each of the plurality of conductive blocks (978) has a contact two (979) fixedly connected to one side.

6. The railway communication power supply remote dual-channel AC switching test device according to claim 5, characterized in that: The electromagnet (971) is fixedly installed on the left end of the contactor body (91), the conductive block (978) is fixedly installed on the bottom wall of the inner cavity of the wiring groove (92), the two connecting plates (974) are fixedly installed on the inner wall of the mounting groove (96), and the contactor body (91) is fixedly installed on the upper end of the base plate (1).

Images